So, I just wanted to let you guys know that I've been exceptionally busy this past week. So much, in fact, that I haven't actually had time to dicuss [s]shit[/s] stuff with our glorious leader (aka Halvtand). It seems that things will look up a bit next week, but I can't make any promises. So, for the next long period, it's probably best to assume that I only have time to do [i]anything[/i] on the weekends and that any attempt to communicate with my during the week will likely be noticed, but not responded to unless it is really, [i]really[/i] important and/or urgent.

*whew*

So, with that little tidbit of information out of the way, I'll move on to the next point on my list.

[@Raijinslayer]
I'd like to remind you that Kenjutsu (Sword Arts) are technically a type of Taijutsu (Close-Quarter Combat), so lowering your Taijutsu level too much would make your Kenjutsu skill being high rather unrealistic, since such skills as dexterity, agility, strength (using gamer terms) and so on would be under Taijutsu proficiency, as well. Just a reminder and all that.

About her giving birth somewhere that's not Gobi... How far into her pregnancy was she, when she was banished? Because "the moment it became clear she was pregnant" can mean various things; by pregnancy test (I have no idea if they have those in the Narutoverse), by some sort of ninja ultrasound-scanning-type-thing (again, I don't know if they have those), when she began showing, when she couldn't hide her baby-belly anymore, when the baby began kicking and so on - all of those things would be at different stages of her pregnancy, after all, and would mean she had more or less time to travel around.
If we go with the "when she began showing" option, that would be when she was around 3-4 months pregnant, which would leave her 4-5 months to travel around the world and find the place she wanted to stay.
How many places did she go before she settled on Gobi? How long did she stay in each place? Where did she actually give birth? Who assisted her with the birth (doctors, midwife, medicine man/witch doctor, traveling medical ninjas)? How long did they stay there after the birth? Why did they not just settle there, rather than travel with an infant? How did she travel with the baby (on foot and carrying him, on a wagon or the like, ect.)? Basically, tell me/us about the travels and the birth.

Even though I like the idea of using engravings on weapons as seals and all that (reminds me of rune magic, which is awesome), I'd like to place attention on the fact that it's not something we've ever seen used in the series and is not in any way described as the way the Seven Swordsmen of the Mist's blades were made (since you mention that his father's clan were rumored to make those). You would need to go in depth about how this works.
I don't see this sort of engraving as Fuuinjutsu, since the only types of Fuuinjutsu that we've seen (as far as I can remember) are meant to either capture, restrict, protect or absorb things; they're all "defensive". They are, after all, sealing techniques; techniques used to seal things inside something.
If I have misunderstood how it is you plan to use these seals, please let me know and elaborate.